This article will introduce a simple PHP file upload sample program code to beginners. Friends who need to learn can enter it for reference.
The code is as follows
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// 定义提示函数
function alert($msg){
return '';
}
// 定义允许的文件类型
$allowType = array('image/jpeg','image/gif','image/jpg');
// 定义路径，可以是绝对路径，或者相对路径都可以
$filePath = './uploadFileDir/';
// 接收表单信息 其中里边写的 file 值是 静态页form表单里的name值
$file = $_FILES['file'];
// 第一步，判断上传的文件是否有错误
if( $file['error'] !== 0 ){
exit(alert('文件上传错误'));
}
// 第二步，判断文件大小，这里的102400是字节，换算为kb就是100kb
if( $file['size'] > 102400 ){
exit(alert('文件过大'));
}
// 第三步，判断文件类型
if( !in_array(mime_content_type($file['tmp_name']),$allowType) ){
exit(alert('文件类型错误'));
}
// 第四步，判断路径是否存在，如果不存在则创建
if( !file_exists($filePath) && !mkdir($filePath,0777,true) ){
exit(alert('创建目录错误'));
}
// 第五步，定义上传后的名字及路径
$filename = time().'_'.$file['name'];
// 第六步，复制文件
if( !copy($file['tmp_name'],$filePath.$filename) ){
exit(alert('上传文件出错，请稍候重试'));
}
// 第七步，删除临时文件
unlink($file['tmp_name']);
// 提示上传成功
echo alert('恭喜，上传文件['.$filename.']成功！');
?>
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//Define prompt function
function alert($msg){
return '';
}
// Define allowed file types
$allowType = array('image/jpeg','image/gif','image/jpg');
// Define the path, which can be an absolute path or a relative path
$filePath = './uploadFileDir/';
//Receive form information. The file value written inside is the name value in the static page form
$file = $_FILES['file'];
// The first step is to determine whether the uploaded file has errors
if( $file['error'] !== 0 ){
exit(alert('File upload error'));
}
// The second step is to determine the file size. 102400 here is bytes, converted to kb it is 100kb
if( $file['size'] > 102400 ){
exit(alert('File too large'));
}
//The third step is to determine the file type
if( !in_array(mime_content_type($file['tmp_name']),$allowType) ){
exit(alert('File type error'));
}
// The fourth step is to determine whether the path exists. If it does not exist, create it
if( !file_exists($filePath) && !mkdir($filePath,0777,true) ){
exit(alert('Error creating directory'));
}
//The fifth step, define the name and path after uploading
$filename = time().'_'.$file['name'];
// Step 6, copy the file
if( !copy($file['tmp_name'],$filePath.$filename) ){
exit(alert('Error uploading file, please try again later'));
}
// Step 7, delete temporary files
unlink($file['tmp_name']);
// Prompt upload successful
echo alert('Congratulations, uploading file ['.$filename.'] was successful!');
?>
http://www.bkjia.com/PHPjc/628866.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/628866.htmlTechArticleThis article will introduce a simple PHP file upload sample program code to beginners. Friends who need to learn References can be entered. The code is as follows Copy code ?php // Definition prompt...
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